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Atlas of Human Body Ultrasound Scanning_ Methods and Diagnostic Applications ( PDFDrive ).pdf
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Z. Xu et al.

 

 

2.2\ Doppler Spectrum

of the Celiac Artery

Fig. 9.7  Doppler spectrum of the celiac artery

2.2.1\ Scanning Method

The method is the same as that shown in Sect. 2.1.1.

2.2.2\ Measurement Method and Normal Value

If the patient is fasted, the spectrum of the CA shows a two-phase pattern with a high diastolic velocity; after a meal, the PSV decreases and the resistance increases.

2.2.3\ Clinical Application Value

The incidence of an asymptomatic stenosis is about 22%. The diagnostic criterion for diameter reduction above 70% is a PSV above 200 cm/s with changes in the spectrum patterns, such as a filled spectrum window.